Bag-making machine



Feb; 26, 1929- G. CORSE BAG- IAKING IAOHINB Filed Feb. 25;

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a. CORSE BAG MAKING IACHINE I Filed Feb. 26, 1929.

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UNITED STATES P AT ENT OFFICE.

GASTON CORSE, 0F PARIS, FRANCE, ASSIGNOR TQ LOUIS CHAMBON, OF PARIS,FRANCE.

BAG-MAKING MACHINE.

Application sled February-25, 1927, Serial No. 170,959, and in FranceMarch i0, 1926.

This invention relates to improvements in machines for making bags ofparaflined paper or the like.

According to the invention means are provided for simultaneously heatinand compressing the parts of the bag to e 'joined.

In asuitable arrangement according to the invention, a machine isprovided with pressers, heated by electric resistance, for the joiningof the lateral edges of the be and.

the parts forming the bottom thereo the said pressers being carried onarms deslgned to rotate on a fixed axle.

The accompanying drawings show, way of example, a method of carrying outt e invention.

The machine illustrated is of a known type in which the bags are shapedround mandrels acarried on a revolving frame, from a band of paper orcardboard, the band having been previously coated with adhesive at thenecessary places. In the process according to this invention thebagsmade of paraflined pa er thus coated with adhesive are pressed un erheat, the adhesive passing through the melted parafiin so that aftercooling the ad- -hesionof the edges is insured.

Figure 1 is a diagram of the-electric circuit.

Figure 2 is an elevation of the apparatus.

Figure 3 is a section drawn to a larger scale showing the connection ofthe circuit between the rotatable arms and the fixed axle.

Figure 4 is a transverse section of one of the pressers, and v Figure 5is a view of the face of one of the pressers.

fold in a known manner the parts of the bag extending be end the formerand a presser 6 provided a with a' resistance 7 presses and heats thebottom of the bag. The latter can be lined with cardboard, whichcan beshe; eddn the same machine.

e electric circuit is shown diagrammatically in Figure 1. Atransfor'mer8 enables the voltage to be reduced to 110 volts to heat the eightresistances 4 placed in series and also to 15 voltsto heat theresistance 7 The variable resistances 9 and 10 enable tegral with theaxle 2 to a movable the current in the resistances to be regulatedaccording to requirements.

As the resistances 4 aremounted on the movable arms 1 'it is necessaryto pass the current from a fixed-part of the machine inart of the saidmachine. For this purpose, t e current is led by a conductor 11 to thefixed part of the machine which carries the brushesor collectors 12.Springs 13tend constantly to force out the co lectors I2 from theirhouslngs.

Opposite. to the collectors 12, and on the mova le part, are arrangedterminals 14. from which extends the conductor 15 successively feedingthe resistances 4. After having passed through all these resistances,the cur- Each movable presser is provided with a resistance arranged ina non-conducting plate 18, and with a heating plate 19 allowing the heatgenerated by theresistance 4 to be conducted to the bag of parafiinedpaper. Inlet ducts 20 and outlet ducts 21 allow the conductor to convecurrent to the resistance 4.

The mova le presser 3 is pivoted on an arm 1 itself i'voted on a support22, and the presser 6 is a so pivoted on a movable arm 23 itself pivotedon the frame of the machine.

The machine operates as follows, that is to say, the arafiined paper outof which the ,bag is to be made is rolled on the former, the lateraledges thereof being then pressed together by the presser 3, which movesin a vertical plane, by any-suitable means and the resistance 4generates a sufiicient heat to melt the paraflin and mix it with theadhesive previous] spread on the paper. On cooling the two e glee becomegummed together.

For t 0 formation of the bottom of the bag levers not shown, fold theparts of the bag over-reaching the former in the known manner, and theresser 6 is applied tothe bottom be made on the same machine byintroducing 2 some modifications indetail. p I

' Having now particularly described and ascertained the nature of myinvention and in what manner the same isto be performed I declare thatwhat I claim is:

1. Apparatus for manufacturing paraffined paper bags or the like,comprising movable arms, pressure elements rotatably mounted on saidarms, electrical heating resistances mounted in thepressure elements,

conductors on said arms connected to said resistances, slip rings, andbrushes applied on said slip rings for passing the current to saidconductors.

2. Apparatus according to claim 1, characterized in that the electricalresistance of the difierent pressure elements are connected in series.

In testimony whereof, I have signed mg name to this specification atParis this 9t 15 day of February, 1927.

GASTON oonsfl.

